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IMPROVEMENT IN :EYE-GLASSES.

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Be it knowmthat I,E. MRRITT COLE, of Southbridge, in the county of Worcester, and State of Massachusetts, have invented a. new anduseful Improvement in Spectacles or Eye-Glasses; land I do .hereby declare the same to be fully described in the-following specification, and represented in the accompanying drawings, of whichi Figurel is a top view, and l Figure 2 'a side elevation of one of the eye-glass frames,l and the bow thereof of a'pair of spectacles.

Figure 3 is a' horizontal section, and

Figure 4 a. vertical section ofthe same.

Figure 5 is a front View of the' frat-ne as it appears when opened apart ready to receive a lens or glass.

All ofthe said figures are drawn on an enlarged scale. i

Insnch drawings, A denotes the glass or len,s-t`rnme, anflB the bow, the two being hinged together, and the bow being held in place by a. screw, a, going through the two lips Z1 c projecting from, and forming part of tlhe frame. The lower or joint partof the bow is arranged in a socket made in one of the lips. In carrying out my improifement, I forin in one of the said lips, from its inner edge, a. mortise or socket, fZ, and I extend from the inner Ysurface of the other lip a small tenon or'projec'tion, e,`to enter and t closely into such mortise, when the lips are closed ind held together by the joint-screw. This tenen-and mortise render unnecessaryany auxiliary screw to go through the two lips in order t`o prevent the lworking of the bow from twisting or moving the parts of the frame, so as to either break or disengage a lens or glass .when in such' fran1e. .Anl auxiliary screw, when used forsuoh prpose, is liable to worl loose and be lost out of the lips, and requires the lips to heivery much larger than they need be when thcy'are provided with nay-invention or improvement. With the latter the tenon and mortise are completely out of sight-when the-lips are closed, and there is ne danger ofthe tenen being lost, it being permanentlyl fixed to thellip.

What, therefore, I claim, is-

The arrangement and application ofthe tenon and mortise with thelips, and with respect to the jointscrew or pin of the-spectacle or eye-glass lframe, substantially as specified.

E. MERE-ITT COLE.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

